Improvement in blast-furnaces



yv. KELLY."

Blast Furnace.

No. 116,444. PatentedJan. 20. 1857.

UNITED STATES ATENT OEEICE.

WILLIAM KELLY, OF EDDYVILLE, KENTUCKY.

IMPROVEMENT IN BLAST-FURNACES.

Specilication forming part of Letters Patent No. RGAll/l, dated January 0, 1857.

To all whom it may concern.-

Be it known that I, VlLLLmr KELLY, of Eddyville, in the county of Lyon and State of Kentucky, have invented new and useful In1- proveinents in Blast-Furnaces; and I do hereby declare that the following is a full and exact description thereof, reference being had t0 thev accompanying drawings, and to the letters of reference marked thereon.

My invention consists in applying to the hearth of the blast`furnace an auxiliary tuyere or tuyeres, which I terin finery-tuycres.7 Said tuyeres are only to be used-say, from ten to twenty-five minutes--previous t0 tapping the furnace, for the purpose of boiling and refining the iron contained in the hearth of the furnace.

Figure l represents a View of the hearth of a blast-furnace. A A are the smelting-tuyeres, supplied in the usual way with air from the blast-engine. B B B are a set of nery-tuyeres,

introduced belowr the level 0f the smeltingtuyeres, and pointing down into the liquid. mass in the hearth of the furnace, the muzzles l of which inery-tuyeres should dip into or near the surface ofthe iron in the saine manner and for the same purpose as lthe finery-re.

I do not claim blowing` blasts of air into a liquid mass of iron so as to refine it, as that is a well-known process; nor do I now claim in this process to refine the iron separate and apart from fuel, as the iron, when being so VILLIAM KELLY.

NVitnesses:

J No. F. KELLY, l. I). GRACEY. 

